Intermittent-grip device.



G. G. BUTLER. INTERMITTENT GRIP DEVICE.

ATPLIOATIVON FILED mums, 190a.

Patented June 25, 1912.

2 SHEETS-SHEET L mamm - uuentor,

fiziizzz Z13 0 0.BU'TLBR.

, INTER'MITTENT GRIP DEVICE.

APLIOATION FILED FEB 29 1908 Patented Jane 25, 1912' 2 SHEETS-SHEET 2.

311mm ton Witnesses CLINTON C. BUTLER, 0F WATERLOO, IOWA.

INTERMITTENT-GRIP DEVICE. I

Specification of Letters Yatent. I

Patented'June 25, 1912.

Application filed February 29, 1908. Serial 1w. 418,501.

T0 a ZZ whom, it may concern:

Belt known that I, CLINTON C. BUTLER,'

a Citizen of the United States, residing at "aterloo, in the county of Blaekhawk and Stale'ot Iowa, have invented a new and Use tul lnlernuttout-Grip Device, of which the following is a SPQClllCtllllOIl.

This invention relates to in'iprovements in' gripping devices and it is especially adapted for use upon and .in connection with the apron ,shal't actuating mechanism for 11121 more spreader-s.and it oon's-ists'in the novel:

eonstruelhm and" arrangementfof its parts as herema'lle'r shown and (loser-died.

The oh eot of the invention is to provide 'a 'sin-u- 'le and durahle.meohanism oi the charaeter'indu-aled which is adapted to etlec tually' operate-tho apron sllzl'l't at intervalsand which iua he. manipulated so as to hold the sald'uproi'i' shat't at a state of rest.-

The nieelmnisn'i consists prnnarlly of an:

'zu'igle lever \vhioh is sivung' upon its fuli cr'unr through the lustr'umenlallty of a Cit-Uh mounted upon the spreader sl'iaftysald angle lever having-a series or spring aetuated pawls which engage a ratchet wheel mount- A ed upon the'apron shalt. Means is provided for manually swinging the anglelever wherehy the sa d apron shaft 'n'lay'lie thrown out'ot garwit'h the spreader shaft. orwill j remanr at a state of rest while the spreader shaft is revolving.

'In ;llie accompanying drawing, l igure l is a perspective view of the nieehamsniiv-1th parts broken awayl lgg. 2 is a sule elo\'a'- tion of a body Withtheapron, shaft actual:

Zing mechanism located thereon. Fig. 3 is t top plan of the support for the supporting bar or rod of the ineehan'ism.

The meehanlsln Consists of the hinor sup-. porting rod 1 which is mounted in the support 1, connected to and althe sidoot the wagon box or body 2. The angle lam-r I) is adjust-ably iulerimnud at the end of tho liar V peripheral portion 14.

1 through the inediu'n'i oi the collar l \vhh-h 1 is adjuslahly mounuul upon the end oi" zhe bar 1 thereby eausii'ig the fulcrum to he held nearer to or farther from the rigid E mounting; l of the her 1. One end of the lever 3 i f S moved in a dmvmvard direction and the. is l'iifureated as at 5 and the other end of the said lever sl id- 1 ably receives the extreme end of rod 6 \rllh'li passes through the stop 7 slidahly mounted thereon. An ordinary lever. (3 is niountml rod (5 and is located between'the ends of the stop 7. The eoil spring 9 bears at one end against the collar 8 and at its opposite end against oneend of the stop- 7. Said coil spring is-under tension with a thrust tendency. The cam 10 is n'iounted'upon the spreader shaft ll. Said shaft is rota-ted through the instrumentality. of the sprocket chain 12 operating upon the sprocket Wheel 13'; The Chain 12 derives its movement from one of the traction wheels of the spreader (not shown) in the usual manner. The cam 10 is provided .wiih a convexed The wheel l5 is 'journa-led for rotation, in the bifurcation 5 of the angle lever Ilaud its axis is the axis of the pawl 18, and said wheel 15 normally is located in the path of the convex portion 14 of the cam 10. The Wheel 15 is provided with a eoncoved or grooved periphery. The

.ratchet wheel 113 fixed to the apron shaft The .piuvl 18 is pivotally connected w th the bifurcated end of the angle lever 2-3 and is adapted to operate u {ion the side of the wheel 16. The pawl 19. is pivotally mounted in the bifurcation 5 of the lever 3 intermediate of the'pawlQlil and the fulcrum to collar 4, and isedapted to operate upon the top of the Wheel 16.- The coil spring "2U is connected at one end with t lte,

pawl-1S below its pivot and at its opposite end "\vitlran upward extension of thepawl 1.9. The said coilspring Crosses or traverses the pivotal points of the pzuvls 18 avnd'lt) and is under tensionhvitha tendency to force-the paivls against the periphery of the ratrhe't \v heel'lti.

From the foregoing descripticm it is ohvious that the lever 23 may be adjusted bodily with relation to the bar 1-l y moving the roller 4- thereon so: as to properly position the pawls IR and 19 u'pon. the wheel 16. As the shaft ll ri'ytates the ham it) is rarried around and at oaehrevolution of the said (1111! the vouvexed .iwriphernl portion l+l thereof engages the wheel 15 and depresses the biturrate'd end 01' the lever 3 against the tension ot-lhe spring. 1). Thus the pawl 18 wheel it; is turned a few degrees and the shell l? is turnedeor-respoiulmgrly'. lvnen the eon'vexed peripheral [mi-tron l-l. ot the i rain 14.) moresbeyond the \vheel iii-the tension of the spring: 9 comes into playjancl the ion the body 2 for moving the rod (3 longirod (5 is moved longitudinally vhieh s.\ \-'ingi tliclinally. The collar 8 is fixed upon. the the lever 3 and elevates the.b1tur(ated end thereof. Thus the pawl 18 is moved up with relation to the wheel 16 while the spring 20 holds the pawl 19 in engagement 'does not come in contact with the wheel 15 and the lever 3 is not operated. By reason of the fact that the peripheral portion 14 of the cam 10 is convexed and the periphery of the wheel 15 is concaved the said, cam and wheel will occupy the same plane when in contact with each other and-will not become v displaced laterally with relation to each other. Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination with a wagon body having a rotatable shaft journ'aled thereon and a cam mounted upon said shatt, a second shaft journaled upon said bod a ratchetwheel fixed; to said second shaft, a bar mounted upon said body, a collar adj ustably mounted upon saidbar, a lever i'ulerumed upon saidcollar-and projecting between the cam and ratchet wheel, and adapted to be operated by the cam, a pawl pivotally mounted upon the lever and engaging the ratchet wheel for .actuating the same,- a retrograde preventing pawl engaging the ratchet wheel for holding the ratchet wheel against reverse movement, said pawls being located at points upon the lever which have movements with relation to the f'ulcrum point of the leverand which movements dif fer in scope with relation to each other.

2. In combination, a ratchet wheel, a bell crank lever, an adjustable means to regulate the swing of said bell crank lever, a wheel carried in the extreme end of one of the arms of said bell crank lever, a cam in operable'relation with said wheel'of the bell crank lever for causing the same and the end of the bell crank lever to be dipped, a pawl pivotally connected to the bell crank lever and'having the same axis as said wheel,

the free end of said pawl being in operable CLINTON c;- BUTLER.

. Witnesses:

ARTHUR W. LEE, ARTHUR E.- MANTLE. 

